Question

fill in the blanks. then, choose the property of addition you used. (a) $2 + 7 = 7 + 2$ select (b) $3 + 0 = 3$ select (c) $7 + (3 + 5) = (7 + 3) + 5$ select associative property commutative property identity property

Explanation:

(a) The equation swaps the order of addends, matching the commutative property definition.
(b) Adding 0 to a number leaves it unchanged, which is the identity property.
(c) The grouping of addends is rearranged without changing the sum, fitting the associative property.

Answer:

(a) Commutative Property
(b) Identity Property
(c) Associative Property